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LibCore: Add try_create(...) helper to all Core::Object derived classes

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This is like construct(...) but returns ErrorOr<NonnullRefPtr<T>>.
This commit is contained in:
Andreas Kling 2021-11-23 14:17:05 +01:00
parent 16356ca478
commit 5a3f5582ba
1 changed files with 12 additions and 8 deletions
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20
Userland/Libraries/LibCore/Object.h
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@ -63,14 +63,18 @@ enum class TimerShouldFireWhenNotVisible {
Yes Yes
}; };
#define C_OBJECT(klass) \ #define C_OBJECT(klass) \
public: \ public: \
virtual const char* class_name() const override { return #klass; } \ virtual const char* class_name() const override { return #klass; } \
template<typename Klass = klass, class... Args> \ template<typename Klass = klass, class... Args> \
static inline NonnullRefPtr<klass> construct(Args&&... args) \ static NonnullRefPtr<klass> construct(Args&&... args) \
{ \ { \
auto obj = adopt_ref(*new Klass(forward<Args>(args)...)); \ return adopt_ref(*new Klass(forward<Args>(args)...)); \
return obj; \ } \
template<typename Klass = klass, class... Args> \
static ErrorOr<NonnullRefPtr<klass>> try_create(Args&&... args) \
{ \
return adopt_nonnull_ref_or_enomem(new (nothrow) Klass(forward<Args>(args)...)); \
} }
#define C_OBJECT_ABSTRACT(klass) \ #define C_OBJECT_ABSTRACT(klass) \